Top AI Pre-Bill Review Software for Law Firms (2027)

What Is Pre-Bill Review Software?

Pre-bill review software is the workspace where a draft bill (the pre-bill, also called a proforma) is reviewed, edited and approved before it becomes an invoice. Reviewers look for vague narratives, block billing, duplicate entries, rate errors, and violations of the client's Outside Counsel Guidelines (OCGs). They correct entries and take their own write-downs at this stage, so fewer invoices are rejected or disputed by the client.

Once approved, the pre-bill moves to the firm's legal billing system, such as Aderant, Elite 3E or Clio, which issues the invoice, manages trust accounts, and collects payments. For the full workflow, see our guide to law firm pre-bill review.

Why Do Law Firms Use Pre-Bill Review Software?

Firms use pre-bill review software to cut the partner time spent on pre-bills and to catch billing rule violations before the invoice goes out. Partners can spend 5, 10 or 15+ hours a month reviewing time entries for mistakes. Bills that sit in pre-bill delay cash, so a faster review shortens the billing cycle.

Pre-Bill Review Software Compared (2027)

1. PointOne Review

PointOne Review is AI pre-bill review software that marks up pre-bills, flags billing issues, and suggests fixes before the invoice is issued. Partners and billing teams begin reviewing issues that are already flagged, instead of going through the bill line by line. These include vague narratives, block billing, duplicate entries, OCG violations, and other issues that lead to write-downs and rejected invoices. For example, it will notify inconsistent time durations across timekeepers for the same task (e.g. meeting).

PointOne Review allows reviewers to accept or reject suggested correction through a one-click step. The pre-bills move automatically to the next reviewer after approval. Edits sync back to the billing system, so the billing team doesn't have to retype partner markups or chase approvals over email. Every change is logged, and any pre-bill can be restored to an earlier version.

The tool applies the firm's billing rules from PointOne Rules, which turns each client's OCGs into structured rules. Each rule can either warn the timekeeper or block the entry until it's fixed. New rules are created from rejected invoices to avoid recurring billing rejections. PointOne Review connects to all billing management systems, including Aderant, Elite 3E, SurePoint and Clio.

2. Intapp Billstream

Intapp Billstream is cloud pre-bill review software for reviewing, marking up and approving pre-bills. Intapp acquired it from Wilson Allen in 2022. It supports in-line changes, configurable workflows, recall and reassignment of aging pre-bills, audit trails and dashboards.

Billstream applies billing rules through Intapp Terms, which displays each client's billing and payment terms. It also integrates with Intapp Time and third-party systems.

3. BigHand PrebillManager

BigHand PrebillManager, formerly Steere, is an attorney-facing pre-bill viewer and editor. It is customized to the firm's existing pre-bill format and designed to mimic how attorneys mark up paper.

The billing department sees each change and processes it into the firm's accounting system.

4. Elite 3E Proforma

Elite 3E Proforma is the pre-bill review module inside Elite 3E, where recorded time moves through review before invoicing. Elite Intelligence, Elite's embedded AI, prioritizes edits, defers low-value items and highlights high-impact pre-bills.

Firms that also use eBillingHub can add Elite Validate, which surfaces billing rule warnings at the pre-bill level in 3E Proforma.

How to Choose Pre-Bill Review Software

Choose pre-bill review software by how well it fits the firm's approval process, what it catches across the whole bill, how much partner time it saves, and how cleanly it works with the billing system.

1. Billing system fit. Confirm the tool reads pre-bills from, and pushes approved changes back to, the firm's billing system.

2. Billing rule enforcement. Check whether the tool builds billing rules from OCGs or requires manual setup for each client.

3. One-click fixes. A flag still leaves the partner to rewrite the entry. Look for corrections the reviewer can accept in one click.

4. Approval routing. Large firms need tiered approval across timekeepers, billing partners and the billing department. For large-firm requirements, see pre-bill review software for large law firms.

5. Where rules apply. Rules that run at time entry catch problems before the pre-bill; rules that run only at the pre-bill leave more for the partner to fix.

1. Approval routing. Large firms need tiered approval across timekeepers, billing partners and the billing department. Check that the tool can be set up to match the firm's approval process. For large-firm requirements, see pre-bill review software for large law firms.

2. Cross-entry review. Some problems only show up when the full bill is in view. Ask whether the tool checks entries against each other or only one at a time.

3. Automated corrections. A flag still leaves the partner to rewrite the entry. Look for a tool that flags issues before the partner opens the bill and offers corrections they can easily accept, so they aren't rewriting entries themselves.

4. Two-way billing system sync. Approved changes should flow back to the firm's billing system so the billing team doesn't have to re-enter markups. Ask how the tool handles split or merged entries.

5. Billing rule enforcement. Check whether the tool builds billing rules from OCGs or needs manual setup for each client. Also check how a firm can confirm the rules are applied correctly. Rules that run at time entry catch problems before the pre-bill, so partners have less to fix.

Related: OCG Compliance Tools

OCG compliance tools convert OCGs into billing rules and check time entries against them, which support pre-bill review. See our comparison of law firm billing compliance software.

FAQs about Pre-Bill Review Software